CALCULATE BEFORE YOU CHARGE

How much does your charging cost?

Home, public AC and fast DC side by side. Enter three prices and compare the same session and energy costs per 100 km. No need to change the rate for each calculation.

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The same energy for comparison

How to calculate your session

Usable battery capacity (kWh)Charge level before charging (%)Charge level after charging (%)

Shared consumption assumptions

Consumption (kWh/100 km)What does the consumption figure include?Shared loss assumption (%)10% is an example. We compare prices using the same energy draw; actual losses at home, on AC and on DC may differ.

Three prices, without re-entering them

Initial prices are fictional examples, not operators' current price lists. At home, enter your own rate including VAT and the relevant variable bill components.

At homePrice including VAT (PLN/kWh)Known session fees (PLN)I confirm all additional fees for this option.

Public ACPrice including VAT (PLN/kWh)Known session fees (PLN)I confirm all additional fees for this option.

Fast DCPrice including VAT (PLN/kWh)Known session fees (PLN)I confirm all additional fees for this option.

Session fees include start, time and parking charges. Missing data does not mean zero. Account for the monthly subscription separately.

Calculations run in your browser. We do not fetch operator prices or save your values here.

Your cost comparison

At home

Partial session cost48.00 PLN

Not all fees have been confirmed. The bill may be higher.

Energy from the grid: 40.00 kWh
Into the battery: 36.00 kWh
Energy only: 48.00 PLN
Fees entered: 0.00 PLN

Energy per 100 km24.00 PLN

20.00 kWh from the grid per 100 km. Excludes session fees and subscriptions.

Public AC

Partial session cost80.00 PLN

Not all fees have been confirmed. The bill may be higher.

Energy from the grid: 40.00 kWh
Into the battery: 36.00 kWh
Energy only: 80.00 PLN
Fees entered: 0.00 PLN

Energy per 100 km40.00 PLN

20.00 kWh from the grid per 100 km. Excludes session fees and subscriptions.

Fast DC

Partial session cost100.00 PLN

Not all fees have been confirmed. The bill may be higher.

Energy from the grid: 40.00 kWh
Into the battery: 36.00 kWh
Energy only: 100.00 PLN
Fees entered: 0.00 PLN

Energy per 100 km50.00 PLN

20.00 kWh from the grid per 100 km. Excludes session fees and subscriptions.

The comparison assumes the same energy draw for every option. It does not predict differences in actual AC and DC efficiency or charging time. We do not select the cheapest full session from incomplete fee data.

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How do we calculate it?

Energy into the battery is the usable capacity multiplied by the increase in charge level. We calculate grid energy by dividing this result by charging efficiency: 1 minus the loss expressed as a fraction.

60 kWh × (80% − 20%) = 36 kWh into the battery
36 kWh ÷ 0.90 = 40 kWh from the grid
40 kWh × 2.50 PLN/kWh = 100 PLN for energy

This example assumes a loss of 10% of energy drawn from the grid. If you enter metered kWh, we do not add losses again. The cost per 100 km includes energy only; additional fees apply only to the specified session.

Enter your home rate including VAT and the relevant variable bill components. Actual losses depend on the car and conditions. Sources: bill components according to URE and ADAC charging loss study.

Read the cost guide →